package com.jk.service;

import com.jk.entity.User;

import java.util.List;

/**
 * Created by dell on 2017/6/16.
 */
public interface HelloService {
    List<User> selectUserList();

    User selectOneUserById(Integer id);

    int insertUser(User user);

    int updateUserById(User user);

    int deleteUserById(Integer id);
}
